Answer the following questions regarding the anion tests for halogens. If you had an unknown that could contain both bromine an iodine, would you be able to identify both anions simultaneously? Why or why not?
Added by Joshua D.
Step 1
** Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 67 other Chemistry 101 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Adi S.
A particular anion can be "positively identified" if the presence of that anion is indicated by a reaction that cannot be confused with any other reaction and that cannot be masked (hidden) by any other reaction occurring at the same time. Suppose that a solution contains four anions: chloride, nitrate, nitrite, and sulfate. Which anions can be positively identified? A. chloride B. nitrite C. sulfate D. nitrate Doc Inmaking was careless and didn't stir his reactions. He performed classification tests A, B, and C on an unknown salt containing one of the nine anions used in this lab. For classification test A, he observed a milky white solution when the barium cation was added. The addition of acid caused a white sludge to sink to the bottom of the test tube while the solution on top was clear. For classification test B, there was no reaction. For classification test C, a milky yellow solution formed, but it seemed to fade and settle when the acid was added. Doc decided to try the confirmation test for halides and observed two colorless layers. Is he correct to conclude that the unknown anion was chloride? What other possible identity would you suggest for the anion? A. Yes. B. No. C. SO42- D. SO32- E. CO32- F. PO43- G. NO3- H. NO2- I. halide (Cl-, Br-, I-)
1. If you had an unknown that could contain both bromine and iodine, you must test for iodide, and if positive, use a different test for bromide. Why? a. Why would the presence of bromide or iodide show up as a false positive in the test for chloride? Include chemical reactions in your explanation.
Madhur L.
Recommended Textbooks
Chemistry: Structure and Properties
Chemistry The Central Science
Chemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD